I will advice him to stop gambling. I will not help him at all than to buy only food for him and it will not be expensive ones but cheap ones. He should stop the addiction and start a better life. It is as simple as that.
This decision might seem cruel to a lot of people but in life hard choices must be made for the greater good...if you don't treat the situation like this the addicted gambler might just continue feeding his addictions.. Gambling addicts have a way of manipulating and gas lighting people when they don't get what they want, it's important for people to recognize this and stop falling for it.. seeking help is the first step the gambler can make
Rejecting those request doesnt mean that you intentionally that not want to lend money and we do simply have those reasons. If you are that having some concern into other peoples condition specially if you have known that he/she is that being addicted to gambling then why you would be letting them borrow money into you on which you do know that this could result into that potential even more addiction and this isnt that a good thing on your part that you are also one of the reason on why you are trying out to mess up his/her life even more. It will be just that too impossible that you cant be able to determine about on whats good and whats bad in between things. There are those actions on which we do need up to do just because we are hoping something that it could lessen out somehow that potential problem might rise even more in the future.